The shooting happened at a birthday party Jan. 23 at Dierks' residence in the 2800 block of Highway 32 in Little River County, Ark.

Dierks allegedly was serving alcohol at the party for her 16-year-old daughter. She also reportedly was meeting visiting teens at the door with a rifle, asking them if their parents knew where they were and whether they were going to tell authorities that she was serving alcohol.

Prosecutors have said that the shooting happened when one of the teens asked Dierks if the gun was loaded.

There were 26 to 32 teenagers in the residence when the shooting happened, which at the time prosecutors said did not appear to be intentional. Police recovered an AR-15 rifle that was believed to be used in the shooting.